Synthesis, structure and surface photovoltage of a series of NiII coordination polymers
Synthesis, structure and surface photovoltage of a series of NiII coordination polymers
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DOI：
10.1002/ejic.200600721
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发表时间：
2006-12-18
影响因子：
2.3
通讯作者：
Ye, Ling
中科院分区：
文献类型：
--
作者：
Sun, Li-Ping;Niu, Shu-Yun;Ye, Ling
合成了三种新型的镍-Ⅱ配位聚合物[Ni-2（HCOO）（4-）（H2O）（4）]（n）（1），[Na_2Ni（btec）（H2O）（8）]（n），（2; H（4）btec = 1，2，4，5-苯四甲酸）和[{Ni（pdc）（H2O）（2）}中心点H2O]（n）（3; H（2）pdc =吡啶-2，5-二甲酸）的合成，并通过单晶X-射线衍射测定了其结构。配合物1中的甲酸基团桥接Ni-II离子以形成无限的3D结构。配合物2也具有无限的三维空间结构，镍离子的配位环境为正八面体。配合物3是一个二维无限配位聚合物。配合物1-3的表面光电压谱表明，它们在300-800 nm范围内均表现出三个正的表面光电压响应，且均表现出p型半导体特性。虽然SPV响应的强度明显不同，但这主要归因于它们的结构不同。配合物1-3的场诱导表面光电压谱（FISPS）证实了它们的p型半导体特性。((c)Wiley-VCH Verlag GmbH & Co. KGdA，69451魏因海姆，德国，2006）
Three novel Ni-II coordination polymers [Ni-2(HCOO)(4-)(H2O)(4)](n) (1), [Na2Ni(btec)(H2O)(8)](n), (2; H(4)btec = 1,2,4,5-benzenetetracarboxylic acid) and [{Ni(pdc)(H2O)(2)}center dot H2O](n) (3; H(2)pdc = pyridine-2,5-dicarboxylic acid) have been hydrothermally synthesized and their structures determined by single-crystal X-ray diffraction. The formate groups in complex 1 bridge the Ni-II ions to form a infinite 3D structure. Complex 2 also possesses a infinite 3D structure and the coordination environment of the Ni-II ion is a perfect octahedron. Complex 3 is a 2D infinite coordination polymer. The surface photovoltage spectra of complexes 1-3 indicate that they all show three positive surface photovoltage (SPV) responses in the range of 300-800 nm and all show p-type semiconductor characteristics. Although the intensities of the SPV responses are obviously different, this can mainly be attributed to the difference of their structures. The field-induced surface photovoltage spectra (FISPS) of complexes 1-3 confirm their p-type semiconductor characteristics. ((c) Wiley-VCH Verlag GmbH & Co. KGdA, 69451 Weinheim, Germany, 2006)